Message type: E = Error
Message class:  CNV_20200_CHECK - Messages for check functions (company code merge) 
Message number: 297
Message text: Merge of house bank account ID's
Merge of house bank account ID's.
There are duplicate house bank and house bank account IDs in the
systems.
Error
The business processes in bank accounting must be analyzed for these
conflicts. Check whether the duplicate house bank accounts in the
participating company codes refers to the same bank and to the same
account. If this is not the case, that is, if the same house bank
accounts refer to different objects, the house bank accounts must be
renamed during the company code merge. To do this, you must specify
mapping values.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.
The SAP error message CNV_20200_CHECK297 typically occurs during the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error is related to the merging of house bank account IDs, which are used to manage bank accounts within the SAP system.
Cause: The error message CNV_20200_CHECK297 indicates that there is an issue with the merging of house bank account IDs. This can happen due to several reasons, including: Duplicate House Bank Accounts: There may be multiple entries for the same house bank account ID in the source data, which can lead to conflicts during the merge process. Inconsistent Data: The data being migrated may have inconsistencies, such as different formats or missing information for the house bank accounts.
Configuration Issues: There may be configuration settings in the target system that do not align with the source data, causing the merge to fail.
Solution: To resolve the CNV_20200_CHECK297 error, you can follow these
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